Preparation and characterization of polyimide/silica hybrid films  

作　　者：张明艳 曾恕金 董铁权 周胜 范勇 张晓虹 雷清泉 

机构地区：[1]Dept. of Material Science and Engineering Harbin University of Science and Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2006年第4期439-443,共5页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.50137010, 50373008 and 50377009).

摘　　要：A kind of hybrid polyimide films was prepared by synthesizing poly(amic acid)/Silica matrix resin through sol-gel technique and then followed by positing it on a silex glass plate and drying at high temperature. The effect of silica content on the corona-resistant property of the films was studied. The miscibility between the organic and inorganic phases and its effect on the corona-resistant property were investigated with aminopropyltriethoxysilane, which served as a coupling agent, added into the polyimide composite system. The chemical structure and the surface morphology of the films were characterized by FTIR and AFM respectively. The corona-resistant property of the films was tested by a rod-plate electrode. It proved that the corona-resistant property was enhanced with silica content. It also turned out that the improvement of the miscibility between the two phases due to the presence of covalent force as a result of the addition of the coupling agent had, to some extent, effect on the corona-resistant property of the films. Furthermore, a theory on the corona-resistant property was put forward preliminarily.A kind of hybrid polyimide films was prepared by synthesizing poly （amic acid ） /Silica matrix resin through sol-gel technique and then followed by positing it on a silex glass plate and drying at high temperature. The effect of silica content on the corona-resistant property of the films was studied. The miscibility between the organic and inorganic phases and its effect on the corona-resistant property were investigated with aminopropyltriethoxysilane, which served as a coupling agent, added into the polyimide composite system. The chemical structure and the surface morphology of the films were characterized by FTIR and AFM respectively. The corona-resistant property of the films was tested by a rod-plate electrode. It proved that the corona-resistant property was enhanced with silica content. It also turned out that the improvement of the miscibility between the two pha- ses due to the presence of covalent force as a result of the addition of the coupling agent had, to some extent, effect on the corona-resistant property of the films. Furthermore, a theory on the corona-resistant property was put forward preliminarily.

关 键 词：POLYIMIDE MORPHOLOGY corona-resistant property 

分 类 号：O484.4[理学—固体物理]